The reigning PDC World Champion whitewashed the man who currently holds the BDO world title to reach his second final in three years at Dublin’s CityWest hotel.
van Gerwen, who won the unique double-start tournament in 2012, will take on James Wade in Sunday’s decider.
“I played really well and I’m very happy with my performance,” said van Gerwen, who hit five 180s in his semi-final win.
“I have given myself something to build on for the final and I’m delighted to be in it for the second time.
“I know what it takes to win this tournament but so does James Wade and it is going to be a tough match and I’m really looking forward to it.”
Both players took out a ton-plus finish in the first set, which van Gerwen edged 3-2.
The Dutchman then threw six perfect darts to kick off set two, only to see Bunting fire in a 128 finish to take the first leg.
The next two legs were shared before van Gerwen took out 75 to force a decider, in which he converted 24 to double his lead in the match.
‘Mighty Mike’ produced a magnificent 160 finish to complete a 3-0 nil whitewash to win the third set.
Bunting took the fourth set to a decider but that was as close as he got as van Gerwen cleaned up 62 to book his place in the final.
By Chris Murphy